| 单词 | transitional element | 
| 释义 | > as lemmastransitional element   transitional element  n.				 [after Russian perexodnyj èlement (D. I. Mendeleev 1895, in  Osnovy ximii 444 (6th ed.), or earlier)]			 Chemistry (now rare and chiefly historical) = transition element n. at transition n. Compounds 2. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > transition element > 			[noun]		 > group VIII transitional element1884 transition element1892 1884    E. Frankland  & F. R. Japp Inorg. Chem. x. 75  				They [sc. elements of Group VIII] are termed by Mendeleef ‘transitional elements’. 1934    Proc. Royal Soc. A. 144 534  				The stable form when M is a transitional element is the true nitro-form M — NO2. 1940    G. H. J. Adlam  & L. S. Price Higher School Certificate Inorg. Chem. 		(ed. 2)	 lvii. 596  				Mendeléeff called the elements iron, cobalt and nickel transitional elements. < as lemmas  | 
	
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